This is a conical-shaped recess around a hole, often used to receive a tapered screw head:
A. Boss
B. Spot-face
C. Counter-bore
D. Countersink
Answer: Option D
Related Questions on Engineering Drawing
A. Horizontal
B. Vertical
C. Inclined
D. None of the above
A. Visible
B. Hidden
C. Extension
D. Dimension
This is the measured size of a finished part:
A. Actual size
B. Dimensioned size
C. Production size
D. Basic size
A. Center line
B. Hatch line
C. Poly line
D. Dimension line
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